Buffing-machine.



E. A. KUEN-,

'BUFFING MACHINE.

APPLICATION FILED'APR. 17. 1916.

Patented July 24, 1917,

4 SHEETSSHEET 1.

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BUFHNG MACHINE.

APPLICATION FILED APR. 11, mm

Patented J uly 24, 1917. 4 SHEETS-SHEET 2 .wz imessew WM M E. A. KUEN.

BUFFING MACHINE.

. APPLlCATION FILED APRQH, um- I 1 ,2-343 5.0. Yatented July 24, 1917,

4- SHEETS-S-HEET 3.

E.A.KUEN. v BUFFING MACHINE.

APPLICATION FILED APR. I7, 1916.

1,3,3 Patented. Ju1y'24, 1917.

4 SHEETS-SHEET 4- @TATFE PATENT FFIQFQ.

EUGENE A. KUEN, OF CINCINNATI, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CORCORAN-VICTOLE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

BUFFING-IVIACI-IINE.

Lggg gfflk Specification of Letters Patent.

Patented July 24L, 191W.

Application filed April 17, 1916.

To all whom it may concern:

Be it known that I, EUGENE A. KUEN, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Bufiingdvlachines, of which the following is a specification. i

It is the object of my invention-to provide means in bufling machines whereby capshaped or parabolic bodies may be buffed, that is, abraded or polished, by means of a bufling-wheel.

I have exemplified the invention in the present application as operating to buff the inside of the article, and in a companion application, Serial No. 91,633, filed April 17 1916, I am illustrating the same as applied in bufiing the outer surface of a bowl-shaped or parabolic article.

The present exemplification of my invention is especially applicable for bufling the insides of parabolic reflectors such, for instance, as are used in headlights, electric automobile lamps, and the like.

The invention consists in providing a head or heads arranged to have the article to be buffed applied thereto and novel means for mounting and reciprocating the same with relation to a huftingwheel; further in novel means whereby the head is quickly manipulated for placing the same in automatically operative reciprocating relation with the bufiing-wheel for performing the buffing operation and for distancing the head from the buffing-wheel for the application or removal of the article to be buffed.

My invention consists further in novel means for adjusting the head, further in novel means for rotating and reciprocating thearticle being buffed, further in novel construction of the article-head whegeby the same is readily changed for accommodating different sizes or shapes of articles; further in novel means for adjusting the article-support on the head; further in novel relation of the article-head, means for moving the same, and the buffing-wheel, and, further, in novel arrangements to adjust the relations of the parts for accommodating articles of various sizes and contours.

The invention Will be further readily un- Serial No. 91,632.

derstood. from the following description and claims, and from the drawings, in which latter:

Figure 1 represents a plan view of my improved device.

Fig. 2 is a horizontal section taken on the line 2-2' of Fig. 3, representing the gearing for rotating and reciprocating the heads.

Fig. 3 is a rear side elevation of my improved device.

Fig. 4 is a front side elevation of the positioning means for the carriage of my improved device, showing the lever for shifting the carriage in full lines for operative position of the carriage, and in dotted lines for retracted position of the carriage.

Fig. 5 is a front end elevation of my improved device, partly broken away, with the buffing-wheels and stands removed.

Fig. 6 is a vertical section of the head takenon the line 66 of Fig. 5, showing a reflector clamped therein, and in full lines showing the relation of the reflector to the buliing-wheel when the former is about to begin its automatic reciprocation, and in dotted lines showing the relation of the reflector to the butting-wheel at an intermediate point and at the end of its path of re ciprocation.

Fig. 7 is a cross-section of the same taken in the plane of the line 7'-7 of Fig. 6, the plane of movement of the reflector being indicated by the arrow a.

Fig. 8 is a vertical section of the head taken on the line 6-6 of Fig. 5, with the clamp in unclamping relation, the clamp being shown in front of the head in full lines and indicated swung down out of range of the reflector in dotted lines. and showing a differently sized holder and reflector therein.

Fig. 9 is a detail of the same taken in the plane of the section line 9 9 of Fig. 8.

Fig. 1.0 is a rear view of the head, partly broken away and indicating the guide for controlling the path of rotation of the article-holder.

Fig. 11 is a cross-section of the same taken on the line 1111 of Fig. 10.

Fig. 12 is a detail in cross-section, on the line 12-42 of Fig. 3, showing the means for adjusting the crank controlling the reciprocating movements of the heads.

Fig. 13 is a horizontal section, taken on the line 1313 of Fig. 3, showing the means for adjusting the saddle.

21 represents a frame on which a saddle 22 is adjustable up and down, as by means of having a screw-rod 23 fixed to the saddle and depending therefrom, passing journalwise into or through a bearing 24 in the frame, an adj usting-nut having threaded connection with the screw-rod and arranged to be rotated by arms 26 for raising and lowering the saddle.

The saddle has up and down movement in guide-ways 27 between the saddle and frame. Tie-rods 28 extend between the sides 29 of the frame, the sides being arranged to be clamped toward each other against the depending guides 30 of the saddle by means of nuts 31.

The saddle has guide-ways 34 on which a carriage 35 reciprocates. The carriage is arranged to support one or more heads 36, two of these heads being shown. Means are provided for reciprocating the head or heads with relation to a buffing-wheel 37, two of these buffing-wheels being shown. It is to be understood that one of the heads and buffing-wheels may be employed in carrying out my invention, or a pair of them may, as exemplified, be employed for simultaneous cotiperating relations.

The head is arranged to have the article to be buffed applied thereto, and means are provided for rotating the article during the buffing action, so that simultaneous reciprocation and rotation is imparted to the article during the bufiing operation. The buffing-wheel, represented at 37 is arranged to rotate preferably in the direction of the arrow 38.

The article being buffed is exemplified as a parabolic reflector 39, such as employed in head-lights, automobile lamps, and the like. The article is received in a holder 41, the holders being interchangeable on the head for accommodating different sizes and different shapes of articles, as see the holder 41 and the recesses 42 for a different sized parabolic reflector 89 therein in Fig. 8, in which the dotted lines 41 indicate the inner faces of different holders. The holder is exemplified as a block having a recess 42 corresponding to the outer contour of the article. The article may project through the holder, as shown in Fig. 6. The holder is carried by a rotating member 43 of the head.

The rotating member is provided with an annular seat 44 in which an annular shoulder 45 of the holder is received, the holder having an annular flange 46 received about the outer edge of the rotating member and preferably seated as shown at 47 on the nonrotating member 48 of the head, the nonrotating member being exemplified as .a

ring-member. Pins 49 connect the holder and rotating member for causing the same to rotate together, the weight of the holder in the present exemplification maintaining the connection between it and the rotating member.

In order to control the rotating path of the rotatable member in the head, I provide the rotatable member with an annular groove 51, in which guides 52 are received, the guides being shown as held in recesses in the non-rotating member and secured in position by means of bolts 54.

Th order to hold the article in the head I provide a keeper, exemplified as a fork 56, the tines of which are arranged to be received in front of the article, for instance in front of the laterally extending peripheral annular flange 58 of the same. The fork 1s mounted on a stem 59 having axial movement in a bearing 61 fast on the non-rotating member 48, the fork being also arranged to be swung about the axis of said stem for placing the same out of range of the cylindrical projection of the article.

The fork is adjustable crosswise of the article, as by being provided with a slot 62 received about the reduced threaded end 63 of the stem, and clamped in adjusted positions against a shoulder 64 on said stem by means of a clamp-nut 65. A spring 66 normally urges the fork away from the article. The fork is held in front of the holder by means of having the stem provided with a lengthwise key way 67, with which a key 68 is arranged to cooperate. The key may be disengaged from the keyway by axial movement of the same by means of a handle 69, and is normally urged toward the key-way by means of a spring 70 located in a thimble 71 secured to the bearing 61.

As long as the key is in the key-way, the fork will be positioned in front of the holder, either proximate to the article or distanced therefrom, but when the key is withdrawn from the key-way, the fork with the stem may be swung about the axis of the stem for moving the fork out of range with the article.

In order to clamp the fork upon the arti ole, the stem is movable lengthwise in its bearing, induced, for instance, by means of a cam-guide 72, the cam-guide being partly upon a bearing-block 73 rigid with relation to the bearing 61, and partly on a hub 74 arranged to be rotated by a handle 7 5, the

hub being rotatable on the stem 59 for drawable angles with relation to its plane of movement, in order that preferably the bottom portion of the inside face of the article, for instance the lower portion of the parabolic reflector will be substantially parallel to said plane of movement and move in said parallel plane, represented as a horizontal plane, so as to be acted on by the buffingwheel during the reciprocating movement of the article throughout the coacting relations between the article and bufiingwheel. The head is also so positioned preferably that the axis of the head and of the article are at an oblique angle with relation to the axis of rotation of the bufling-wheel, so that on reciprocating movement between the article and thebuffing-wheel, the bufhng-wheel may contact preferably the whole area of the article with substantially equal pressures. This arrangement also insures that the buding-wheel will buff the entire inner face of the article, as, by referring to Figs. 1, 6 and 7, it will be noted that the butting-wheel traverses said inner face obliquely with relation to its principal axis indicated by the dotted line 78, being at one side of said axis at the point of initial contact of the article therewith and extending to the other side of said axis at the point of closest approach of the article thereto.

Reciprocating motion is caused between the article and the bufiingwheel. I prefer to have the article reciprocate, as the buffingwheel is rotated at high speed and requires comparatively great power to rotate the same at the speed required for the buffing operation.

For rotating and reciprocating the head, I provide a bevel-gear 79 fixed to a shaft 80 journaled in a bearing 81 on a bracket 82 of the carriage 35. The shaft 80 is suitably rotated, as by having a knuckle-joint 83 connected therewith, the knuckle-joint having connection with a pluri-part shaft 84, com prising an inner member and an outer member having spline-connection 85 between them for causing their combined rotation, and operated in suitable manner by a suitable driving agency.

The bevel-gear 79 meshes with a bevelgear 86, which is fast on a hollow hub 87 journaled in a bearing 88 of the carriage. The hollow hub has a bevel-gear 89 fast thereon. A shaft 91 has spline-connection 92 with the hollow hub 87 for causing the shaft to rotate with the bevel-gears. A sleeve 93 surrounds the shaft, the shaft being rotatable in the sleeve, and the sleeve sliding longitudinally in a bearing 94 on the carriage.

The head-frame 95 is fast with the sleeve,

and slides on a guideway 90 on a bracket 97 extending from the carriage 35, the headframe being thereby prevented from revolvmg.

A bevel-gear 98 is fixed to the shaft 91, as by a set-bolt 99, the shaft and sleeve being relatively lengthwise positioned at the other end of the sleeve, by means of the hub of the bevel-gear 98 and a collar 100 fixed to the shaft by a set-bolt 101. The outer end of the shaft is journaled in a bearing 102 in the head-frame. The bevel-gear 98 meshes with a pair of bevel-gears 103. Each of the bevel-gears 103 is fixed on a shaft 104 journaled in a bearing 105 of a head-yoke 106. The rotatable member 43 is provided with a socket 107, in which a shaft 108 is fixed, as by a set-bolt 109. A universal-joint 110 is located between the shafts 104 and 108 for communicating rotation from the shaft 104 to the shaft 108 and the rotatable member of the head, regardless of the angular positioning of the head. Two of the head-yokes are shown, but if desired only one may be employed.

The angular positioning of the head is accomplished by locating the same between the tines 114 of the head-yoke 106. The tines are provided with arc-slots 115, clampbolts 116 being received through the arcslots and threaded into the sides of the ringmember 48 for clamping the ring-member in adjusted position to the head-yoke. The ring-member at the tines is provided with flat surfaces 117 coacting with the tines of the head-yokes for aiding in clamping the ring-member in position.

The bevel-gear 89 meshes with a bevelgear 121 journaled on a stub-shaft 122 fixed in a bearing 123 in the carriage. A spurgear 124, fast with the bevel-gear 121, meshes with a gear 125 on a crank-plate 126, which is fast on a shaft 118 in a bearing 119 on the carriage, and has a cranlepin 127 adjustable thereon toward and from the axis of the crank-plate, as by locating the same on a slide-block 128 adjustable in a T- slot 129 in the crank-plate and clamped in position by a T-bolt 130 and nut 131.

A connecting-rod 133 is journaled by a bearing 134 about the crank-pin, the other end of the connecting-rod being received in a bearing 135, in which it is suitably secured, as by a pin 136. The bearing 135 is on a bearing-piece 137, which has a bearing 138 thereon, in which a rod 139 is received, the rod being pivoted as by a bearing 140, on a bolt 141 in lugs 142 of the head-frame A spring 143 is received about the rod 139 between the bearing 138 and the bearing 140, the rod at the other side of the bearing 138 being provided with a collar 144 suitably secured thereto, as by a pin 145, for preventing movement of the bearing 138 off the rod. The reflector is held toward the buffing wheel by means of the spring 143, which forms a resilient cushion for the head.

The eccentric or crank-pin 127 is adjustable toward and from the axis of the crankplate for adjusting the length of the automatic reciprocating path of movement of the head-yoke, the head-yoke in this movement being slidable forward and back, that is, reciprocating with relation to the bufiingwheel.

Means are provided for moving the head a substantial distance toward or from the buffing-wheel for insertion or removal of the article being bulfed. I prefer to accomplish this by manual means, and have instanced it as accomplished by means of a lever 151 provided with a handle 152, the lever being pivoted on a pin 153 on a slide 154-, adjustable lengthwise of the guideways 34 on the saddle, for instance by means of having a screw-rod 156 secured thereto at 157, a nut 158 being threaded about the screw-rod and having a handle 159 thereon. Longthwise mov ement of the nut is prevented by having a fork 160 fast to the saddle, as by bolts 161, received in an annular groove 162 in the nut. Turning of the nut will move the slide 15 1 quickly toward or from the position of the buffing-wheel, and when in proper adjusted position it is arranged to be clamped to the guideways by means of setbolts 163. I

The lever 151 has articulation at 16 1 with a link 165 having articulation with the shaft 118, held thereon by a collar 166. When the lever 151 is swung upwardly and rearwardly on its pivot 153, its articulation 16 1 with the link 165 will move back with the lever and draw the carriage, together with the operating parts and heads mounted thereon, away from the buffing-wheel, the assumed position of the lever in the latter relation being indicated in dotted lines in Fig. a which positioning may take place during continued automatic reciprocation of the carriage.

WVhen the lever is manipulated for moving the headpart toward the buffing-wheel, the axis of its articulation 164tis below a right line intersecting the axes of the pivot 153. and articulation at 166, a stop 167 on the lever 151 being arranged to strike the link when in such relation, whereby the unintentional retraction of the carriage through the medium of the link or lever is prevented, as this relation of the axes forms a locking relation against a strain tending to buckle the link and lever.

Adjustments are provided whereby the article may be raised or lowered, as by raising or lowering the table; whereby the article may be tilted to the desired angle, as by tilting the head as hereinbefore described; and whereby relative lateral adjustment may be accomplished between the article and the buffing-wheel for adjusting the relation of the axis of the reflector to the buffing-wheel, this latter adjustment being preferably accomplished at the buffing-wheel, as presently to be described. These adjustments accommodate various sizes and shapes of articles, and various sizes and shapes of articles are conveniently attached to the heads by having the holders thereon interchangeable.

The lateral adjustment of the buflingwheel is preferably accomplished by axial adjustment of the buffing-wheel shaft 171. The bufling-wheel has a bore 172 received over the reduced end 173 of the shaft and is arranged to be clamped between flanges 1741 by means of a clamp-nut 175, buffingwheels of the desired diameters and kinds being interchangeably clamped in place. The bufling-wheel shaft is journaled in bearings 176, and is rotated by a suitable rotating agency, for instance a pulley 177. The pulley is arranged to be adjustably secured to the shaft, as by means of a set-bolt 178. When it is desired to adjust the buflingwheel laterally, the set-bolt 178 is loosened, the shaft positioned endwise, and the pulley secured thereto in adjusted position by resetting the set-bolt 178. j 7

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a machine of the character described, the combination. of an article-head comprising an article-holder, means for automatically. reciprocating said article-head toward and from a buffing-wheel, means for adjusting the angular relation of said article-holder to said buffing-wheel, and means for manually controlling the position of the path of said reciprocation with relation to said buffing-wheel.

2. In a machine of the character described, the combination, with a bufingK wheel, of a hollow article-holder arranged for receiving a bowl-shaped article in which said bulfing-wheel is received for bufiing the interior of said article, means for automatically reciprocating said article-holder toward and from said buffing-wheel, and means for adjusting the angular relation of said articleholder to said buffing-wheel for placing the interior face of said article in coacting relation with said buffing-wheel.

3. In a machine of the character described, the combination, with a buffingwheel, of a hollow article-holder arranged for receiving a bowl-shaped article in which said buffingwheel is received for bufling the interior of said article, means for automatically reciprocating said article-holder toward and from said buffingwheel, means for adjusting the angular relation of said holder to said buffing-wheel for placing saidinterior face of said article in coacting relation with said buffing-wheel, and means for nianually controlling the position of the path of said reciprocation with relation to said bufling-wheel. 7

4;. In a machine of the character described, the combination of an article head, a bufling-wheel, means for automatically reciprocating said article-head toward and from said buffing-wheelin a line at an oblique angle with relation to the axis of rotation of said bufling-wheel, and means for adj usting the lateral relation between said but-fing-wheel and said article-head.

5. In a machine of the character described, the combination of an article-head, a bufling-wheel, means for automatically reciprocating said article-head toward and from said buffing-wheel in a line oblique to the axis of rotation of said buffing-wheel, means for adjusting the lateral relation between said buffing-wheel and said articlehead, and means for manually controlling the position of the path of said reciprocation with relation to said buffing-wheel.

6. In a machine of the character described, the combination of an article-head arranged for having a bowl-shaped article attached thereto in manner so that said head and bowl-shaped article are located in coincident cross-sectional planes, means for automatically reciprocating said articlehead toward and from a bufling-wheel, and means for manually controlling the position of said article-head with relation to said bufling-wheel for distancing said articlehead from said bufiin -wheel for insertion of the bowl-shaped articles between said article-head and buffing-wheel for attachment of the bowl-shaped articles to or re moval of the samefrom said article-head.

7. In a machine of the character described, the combination of an article-head, and means for automatically reciprocating said head toward and from the position of a buifing-wheel, said last-named means comprising resilient means acting to urge said head toward the buffing-wheel osition.

8. In a machine of the earacter described, the combination of an article-head, means for automatically reciprocating said article-head toward and from the position of a butting-wheel, said reciprocation being in a path adjacent to said article-head, said last-named means comprising resilient means acting to urge said article-head toward said buffing-wheel position, and means for manually moving said article-head to a position distanced from said bufling-wheel position for attachment or removal of the articles.

9. In a machine of the character described, the combination of a frame, asaddle adjustable up and down thereon, a carriage adjustable on said saddle, an article-head on said carriage comprising an article-holder, and means for simultaneously reciprocating said article-head and rotating said articleholder.

10. In a machine of the character described, the combination of a frame, a saddle article-head, and a adjustable up and down thereon, a carriage on said saddle, an articlehead on said carriage comprising an article-holder, means for simultaneously rotating said articleholder and reciprocating said article-head, means for adjusting said carriage lengthwise of said reciprocating movement, a butt ing-wheel, and means for adjusting the lateral relation between said article-head and said bufling-wheel.

11. In a machine of the character described, the combination of a saddle, a slide, means for adjusting said slide on said saddle, a carriage on said saddle, an articlehead on said carriage comprising an articleholder, means for simultaneously rotating said article-holder and reciprocating said lever and a link articulated together and articulated to said slide and saddle respectively and aranged for movement of said carriage toward and from said slide, said first-named articulation arranged to pass the plane parallel to and intersecting theaxes of said last-named articulations when said carriage and slide are in separated relation.

12. I11 a machine of the character de scribed, the combination of a frame, a saddle adjustable up and down thereon, a carriage on said saddle, an article-head on said carriage comprising an article-holder, means for simultaneously rotating said articleholder and reciprocating said article-head toward and from a bufling-wheel, means for adjusting the angular position of said article-holder in its path of reciprocation, and means for manually moving said carriage toward and from said position of said buffing-wheel during continued reciprocating movements of said article-head for controlling the position of the path of said recipro cation.

13. In a machine of the character described, the combination of a frame, a saddle adjustable up and down thereon, a carriage on said saddle, an article-head frame on said carriage, an article-holder rotatable on said head-frame and overhanging said carriage, and means for reciprocating said headframe on said carriage and simultaneously rotating said article-holder, said carriage having a slide-guide adjacent to said overhanging article-holder for guiding said' head-frame.

14. In a machine of the character described, the combination of an article-head comprising a head-yoke, a ring-meinber, means for adjusting the angularity of said ring-member on said head-yoke, an articleholder, means for rotatingly mounting said article-holder in said ring-member, means for reciprocating said article-head, and means for rotating said article-holder.

15. In a machine of the character described, the combination of a saddle, a carriage thereon, means for adjusting said carriage on said saddle, a head-frame on said carriage, an article-holdor on said headframe, a shaft having rotating connection with said article-holder and journaled on said carriage and having reciprocating movement thereon, gearing on said carriage for rotating said shaft, a crank-plate having rotating connection with said gearing, an eccentric-pin adjustable on said plate, and connections between said eccentric-pin and head-frame.

16. In a machine of the character described, the combination of a saddle, a carriage thereon, means for adjusting said carriage on said saddle, a headframe on said carriage, an article-holder on said headframe, a shaft having rotating connection with said article-holder and journaled on said carriage and having reciprocating movement thereon, gearing on said carriage for rotating said shaft, a crank-plate having rotating connection with said gearing, an eccentric-pin adjustable on said plate, a connecting rod articulated with said eccentrio-pin, rod, a rod slidable in said bearing-piece and having operative connection with said headframe, and a spring between said headframe and bearingpiece.

17. In a machine of the character described, the combination of a head-frame, means for reciprocating said head-frame toward and from buffing-wheels, said headframe comprising heat -yokes extending diagonally with relation to each other toward the positions of the bufling-wheels, an article-holder in each of said head-Yokes, a gear between the distanced sides of said head- Copies of this patent may be obtained for five cents each, by addressing the a bearing-piece on said connectingagear in line with each of said head yokes having rotating connection with said first-named gear, and universal-joint connection between each of said seeondnamed gears and said respective article-holders.

18. In a machine of the character described, the combination of a head-frame, means for reciprocating said head-frame toward and from buffing-wheels, said headframe comprising head-yokes extending di agonally with relation to each other toward the positions of the bufiing-wheels, an article holder in each of said 'head-yokes, a gear between the distanced sides of said headyokes, a gear in line with each of said head yokes having rotating connection'with said first-named gear, universal-joint connection between each of said second-named gears and said respective article-holders, and means whereby the angular relations of said article-holders to said buffing-wheels are changed.

19. In a machine of the character described, the combination with a pair of buffing-wheels, of an article-head frame comprising a pair of article-heads arranged at oblique angles with relation to the axes of rotation of said buffing-wheels, and means for reciprocating said head-frame in a path at substantial right angles tosaid axes of rotation.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

yokes,

EUGENE A. KUEN.

Witnesses: s

THERESA M. SILBER, CHARLES E. WEBER.

Commissioner of Patents,

Washington, D. 0. 

